Joseph f



iuittl tatw @me can,

JosEPHF. LETELLIER, or GRAND RAPIDS, MICHIGAN.

Leiters Para: No. 92,848, zaad .my 2o, 1869.

IMPROVEMENT INy STEAM-ENGINE GOVERNOR The Schedule referred to .in these Letters Patent and making part of the 'samet the pulleys which drive the governor, and also of a` portion of the mechanism which releases the governor# valve, when the belt breaks or runs oli from the pulley, and permits the same to close instantly;

Figure 2 is a vertical sectional elevation of the governor and its valve, showing the detaching-meohanism in position for use, and also, in red lines, the position whichit assumes when it is released from the control of the governor, and has closed the valve;

Figure 3 is a transverse scctionon line :c :l: of iig. 2;-

Figure 4 is a transverse vertical section on line y y of lig. 1, showing the devices for holding the valve in position, when the engine is in operation;

Figure 5 is a side view of the l,hangers in which the counter-shaft, which may be used for driving the governor, are placed, showing, iu black lines, the position they assume when in the proper position for operating the governor, and, in red lines, the position which they assume when the belt breaks' or runs olf from the pulley;

Figure 6 is an elevation of the'sleeve, which slides vertically upon the spindle of the governor, and which has, upon its lower end, the inclined surfaces, for al-l lowing it to drop down, in the ,event of the breakage or displacement of the belt;

Figure 7 is a perspective view of the stationary cam, or inclined plane, wl1icl1 is attached to the frame of 'the governor, and upon -which the governor rises'and falls;

Figure 8 is a vertical section through the cap upon the top of the spindle, o n the line z z, showing the pins for uniting the parts thereof together;

Figure 9 is a transverse section of the same; and

Figurel() is a sectional view ofthe governor, on line fz x of fig. 2.

Corresponding lettcrsrefer to corresponding parts in the several figures.'

This invention relates to that class 'of governors for stea'mi-engines .which is designed to automatically and instant-lyclose the valve thereof, in the event of the breaking or displacement of the belt which drives the same; and' It consists in the construction, combination, and arrangement of its parts, as will be more fully described hereinafter.

A, in the drawings, represents the flame-work of the governor,` the construction of which is clearly shown in fig. 2 of the drawings, it being arranged upon.

the top ofthe caseof the governor-valve.

B represents the case of the governor-valvawbich may be placed upon the steam-chest, or in any other suitable position.

The construction and arrangement of this case are clearly shown in figs. 2 and 3, O represents the double-seated valve, which'is to be placed in the case B, and so arranged as to admit steam below both its faces into an outlet common to both.

D represents the spindle, or stem of the valve, which passes up throughI a stuflng or packing'box, D", in

the lower end of the frame, and into the socketfjoinia or connection E, to which it is secured by means of a set-screw.

D represents the spindle ofthe governor, which is a rod of metal secured to the upper end, E', of the socket-joint E, by means of a pin passing through such socket, and into or through the spindle.-

' E E represent the socket-joint, or connection above referred to, its construction and arrangement being clearly shown in fig. 2.

F represents a bevelled-gear wheel, which is to be secured to the revolving sleeve, orspindle H, and is to receive its motion from the bevelled wheel F', which .wheel is to be secured to the shaft P.

G representsa socket-projection, which is formed upon theframe A, through which the revolving sleeve, or spindle H and the vertically-movingr spindle D' pass.

H represents the revolving spindle, to which the gear-wheel F is attached, which gives motion to the arms and balls of the governonandthrough them vto the valve.

I represents a sleeve, which is open at its lowerend, and has a chamber formed therein of suicient diameter. and length to receive the socket-projection G, formed upon the frame A.

This sleeve also hasan arm, O, projecting from it,

the inner end of which has a yokey formed upon or within it, to receive the wheel F', while its outer end O has a hole bored through it, for the passage of the shaft P, as shown in figs. 2 and 10.

Upon the lower surface of this sleeve there are formed two inclined planes, as shown in Iig. 6, they being so arranged that whenthe arm is turned in th'e direction of the stop It, the sleeveand the parts connected therewith will be raised, in consequence of the inclined planes, or onefof them, coming in contact with the stationaryincline I.

When the arm is in this position, it being the one indicated in ligs. l and 4, the governor-valve will be kept open by means hereinafter to be described, but should the belt which passes over the pulley Q break or run oii from such pulley, the arm will swing in the 'opposite direction, or away from the stop R, and, in

consequence. of' the gravity of the sleeve I, and the parts connected therewith, it will slide downward upon the inclined plane, and the valve willrbe closed.

l represents a stationary inclined plane, which is to be secured to the socket-projection G, upon frame A,

as shown in g. 2.

L represents the cup, which is seeuredto the upper end of the spindle, lor rod D', into an aperture or groove, in which the inner short arms of llevers M M pass.

This cup is composed of two parts or sections, the

lower one consistinor of a disk of brass or other s1iita-' ble metal, smooth upon its upper surface, but having upon itslower surface a hub, through which a setscrew passes, for the purpose of securing the same to the spindle D.

Upon the top of this disk there is tofbe secured. a plate, Yor plates of steel, or other suitable metal, which are to beheld in position by r'neans of pins, as shown in iigs. 8 and' 9, the 4object being to provide the means off taking up any lost motion which-may occur at this point, in consequence of the wearing away of the arms M M, or of such plates.

L' represents the upper portion of the cap, which is a disk, of any suitable metal, having upon its upper surface a projecting hub, and in the upper surface of such hub an annular groove, or chamber, for the purpose of forming a lubricator, by providing a suitable receptacle for lubricating-material.

This disk is to be confined to the spindle D', by means of a set-screw, and, further, by a uut'upon the end of spindle D', so that it may, at any time, be set down upon the ends of levers M M, for the purpose of taking up any lost motion consequent upon the wear of the parts.l

M M represent the levers, to which the balls N N are attached.

They are to be pivoted to the socket K, as shown in iig.f2, and so arranged that their inner short arms shall enterthe space between the two disks of cupL L', for the purpose'of raising and loweringthe same.

N N represent the b. ils, or weights whichV are to be secured to the outer ends ofthe levers.M M, as shown in iig. 2.

O represents tlie'socketarin, which is attached to the sleeve I, and through which the shaft P passes.4

l P represents the shaft, which passes through the socket O, and upon the inner endof which the beve-Hedgear wheel F is secured, while its outer end carries the driving-pulley Q.' v

Q, represents the driving-pulley, which is to be prov'id'e'd with a flange upon one or both of its edges, to prevent the displacement .of the belt.

R represents a stop, which is formed upon, or may be attached to an arm,which projects from the frame A, in such a position, that as the socket-arm O is swung to the position shown in iig. 10,the projection thereon will entera recess formed in such arm, for a purpose soon to he described.

The object ofithis 'stop is to prevent the arm O from swinging past a certain point in one direction, and so that thebelt may hold the arm in a fixed position, when the engine is running properly. Y'

S represents a jointed bar of metahhaving upon its upper end a hook-brmation, which is.` designed to pass vertically through a slot formed in the end of the stop R, so1 that as the projection ,upon arm 0 is brought into contactwith this hook, it shall retain the same in said slot, but, in the event of the breaking or displacement of the belt, and the swinging of" the arm away from the stop, the bar S will be liberated and fall down, thus-permitting the weight upon the arm U, to aid in closing the valve.

The lower hinged portion of this bar is to be reduced in thickness, to enable it to enter clamp T T', as shown in iig. 4. c

T represents a clamp, which is to be secured to the outer end of arm U, it having holes through its projecting ends for that purpose.

This clamp consists, in part, of a flat bar of inetal, having upon each of its ends, and upon one of its sides, arms projecting at a right angle, and leaving between them a space suiiicient to admit of the passage of the bar S.

T represents a lever, having upon its inner end an egcentric formation, through which the armU passes.

Upon the opposite end of this lcver is an arm, which may extend outward forvany suitable distance, and he provided with the meansot attaching a cord thereto, over a pulley, so that as the outer end of `the lever is` raised, the eccentric will be brought 4in contact wit-h the bar S, and thus the weighted arm U will lle held suspended, and the eccentric e' be removed from the lever e, thuspermitt-ing the valve to be controlled entirely by the governor-balls.

Should it become desirable, at anytime, to close the. valve, when the arm O, or the projection thereon, is in contact with the hook upon the bar S, it can be done by lowering the'outer end of the lever T', thus releasing the hold of the eccentric upon its end, from its contact with har S, when the weighted arm U will drop, and bring the eccentric einto contact with lever ve, which enters. aslot' in the coupling F 1*" of the,

valve-spindle, and thus the desired result will be accomplished.

U represents an arm, which is to be secured to a shaft, which has its bearings in 'projections formed upon frame A, as shown in lig. 2, in which figure the diiierent positions which this arm assumes are shown.

ya represents a weight, which is to be attached tothe arm U.

e represents a lever, which is to be pivoted to the frame A, as shown in fig. 2, and is to be used in closing the valve, as above described.

`e represents an eccentric, which is to be secured to the shaft, to which the arm U is attached.

It is to be arranged immediately above the levert, and so as to press down upon such lever, when occasion requires. v

Figs. 1 and 6 show an arrangement of hangers, which may be. used in connection with the governor herein described, 7c' showing a plank, to which such hangers c-nraybe attached, Z showing the point to which a swinging arm is attached, to the'lower end of which the journal-box g is attached.

Within these boxes the shaft g, to which the pulleys h are attached, rotates.

The arrangement of the belts which are to drive the pulleys, is shown at h and f', it being such, that as the belt f passes from pulley f to h, it will, so long as it is in order and remains upon the'pulleys, retain the hangers in the position shown in dark lines in iig. l, but should the belt break'or run off from its pulley, or either of them, the arm l' will swing into the position shown in red lines in iig'. 4, and thus bring, the pnlleys 7L into the position shown in fig. 1, which will allow the arm O, and its socket I, of the governor, to swing around, as vbefore described, and thus the valve will be close'd, in thc same manner that it would have been done had the belt h broken -or` slipped from its pulley. l

Itis apparent that both of these devices 'may be used in connection, or that the governor may be driven with a belt direct from the engine-shaft, as is preferred. v

Having thus described my invention,

What I claim, and desire to secure by Letters Patent isl. The construction of the sleeve I, with its projectingarm, or socket 0, for the reception of the shaft P, and the inclined planes -upon its lower surface, substantially as set forth.

2. The construction of the cap L L', upon the upper end of the spindle D', substantially as shown and described.

3. The combination of the stationary-inclined plane I', or its equivalent, with the movable inclines upon he socket I, substantially as and for the purpose set orth.

4. The stop R, when constructed and arranged sub- 

